Standard practice
when darwin first proposed his theory of evolution by natural selection, the field of
genetics did not yet exist. in what way does genetic science now contribute to the
study of evolution?

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.